Gas-burner.



PATEN'TED APR. 26, 1904,

o. A. GAMPBBLL. GAS BURNER. APPLICATION FILED 00T. 6, 1903.

N0 MODEL,

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UNITED STATES Patented April 26, 1904.

PATENT CEEICE.

GAS-BURNER.

SPECIFICATION vforming' part of Letters Patent No. 758,411, dated April 26, 1904;.

Application led October 6, 1903.

To all whom it may concer-71,:

Be it known that I, CHARLES A. CAMrBELL,a citizen ofthe United States, and a resident of the city of New York, borough of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Gas- Burner, of which the following is a full, clear, and exact description.

This invention relates to an incandescent gasburner, and the prime object of the invention is to so control the circulation of air past the mantle as to produce the best possible results from the amount of gas consumed. The invention relates to that class of gas-burners in which a' mixture of air and gas is burned within the mantle, and the burner is provided with orifices to allow a current oair to pass up through the chimney outside of the mantle. I attain the object in view with a burner of this class, and in so doing I provide a lcup which encircles the burner-tube and the lower portion of the mantle, thus preventing any air from entering the mantle excepting that which is mixed with the gas to promote com-V bustion. At the same time a strong current of air is allowed to pass up around the burnertube outside the mantle, so as to cool the tube and increase the intensity of the light given off from the mantle.

This speciication is an exact description of one example of my invention, while the claims dene thev actual scope thereof.

Reference is to be had to the accompanying drawing, forming a part of this specification, which represents a vertical section of the invention.

a indicates the nipple and valve, which are connected with the gas-supply.

6 indicates the mixer, c the burner-tube, and

Id the neck thereof.

e indicates a foraminated support for the chimney f, which latter is provided at its lower portion with air-inlet orilices f', and g indicates the fastening means for the rod L, which supports the mantle c'.

All of the above-described parts are well known in the art and may be of the usual or any preferred construction.

My improvement lies in the cup or shield Which surrounds the burner-tube c and is supserii No. 175,957. No model.)

ported thereon, the contracted lower portion of the cup snugly engaging the tube and the upper end of the tube Haring out toward the orifices. f This cup c incloses the lower end of the mantle c' and protects the burner-tube from the cooling influences of the air rising through the foraminated support e, and it'also prevents this air from entering the space within the mantle.

In the operation of the burner the gas and air from the tube c are burned in the mantle c' in the usual manner'. through the foraminated support e and is thrown outward by the flared outer portion of the cup lc. This current of air meets the A current of air rises A currents entering vthe chimney through the i vconverging currents oi' air strike each other and/rise around the inner sides of the chirnney in the form of a continuous steady current. enabled greatly to increase the efficiency of the burner and to produce witha given quantity of gas a stronger light than heretofore. Various changes in the form, proportions, and minor details of my invention may be resorted to at will without departing from the spirit and scope thereof. Hence I consider myself entitled to all such variations as may lie within the intent of my claims.

Having thus described my invention, I claim as 'new and desire to secure by Letters Patent 1. The combination with a gas-burner, comprising a burner-tube, a mantle and its support, an oriiced chimney, and an oriced chimney-support, of a hood or cup inclosing the burner-tube and extending upward to inclose the lower portion of the mantle, said hood or cup being flared outward toward the orices in the chimney, said chimney being suddenly enlarged opposite said flared top of the cup, the orifices in the chimney being located at that point, for the purpose specified.

2. In a gas-burner, a mixing-chamber having air and gas inlets at its lower portion, a contracted or neck portion above said mixingchamber,aburnertube surmounting said neck portion, a shield surrounding said burnertube, said shield being contracted at its bot-y tom into peripheral engagement with the By means of this improvement I am lower end of said burner-tube to form a chamber with a closed bottom around said tube, said shield extending upwardly in parallelism with the burner-tube to a point near its top and terminating in an annular outward Hare, a foraminated chimney-support surrounding said neck portion, and a chimney upon said support, said chimney being provided with a contracted portion at its lower end having vertical walls extending upwardly to the flared portion at the top of said shield, the chimney having a right-angled offset at that point to prevent a contraction of' the air-passage opposite said flared portion of the shield, the chimney being also provided with air-inlet openings at the lower end of its enlarged portion, and the lower portion of the mantle being surrounded by the flared portion of the shield.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.'

CHARLES A. CAMPBELL.

Witnesses:

ISAAC B. OWENS, JNO. M. RrrrER. 

